water pump sending unit question.
Thread Starter
Pro
Joined: Apr 2002
Posts: 605
Likes: 0
From: Outer Banks NC FIRST IN FLIGHT
water pump sending unit question.
Should the sending unit in the waterpump be put in without any RTV?
When I removed it from the old pump it seemed to be clean no sealer in the threads.
Thanks.
When I removed it from the old pump it seemed to be clean no sealer in the threads.
Thanks.
Burning Brakes
Joined: Feb 2002
Posts: 871
Likes: 1
From: Union KY
Re: water pump sending unit question. (Kizmo)
Kizmo:
When I replaced my waterpump (last Saturday) I used teflon tape on the sending unit's threads. I also noted GM hadn't used anything, but I figured that since it was brass and the pump was aluminum, something was needed. It worked fine.
Cire96
When I replaced my waterpump (last Saturday) I used teflon tape on the sending unit's threads. I also noted GM hadn't used anything, but I figured that since it was brass and the pump was aluminum, something was needed. It worked fine.
Cire96
Racer
Joined: Sep 2000
Posts: 294
Likes: 0
From: Princeton Texas
Re: water pump sending unit question. (Kizmo)
If the "sensor", (probably the fan switch), has two terminals inside, it does not use the case a the ground return. If it has a single terminal, it uses the block as the ground return and putting teflon tape on it may cause it to not make contact. This rarely happens because as you insert the "sensor" the threads cut through the teflon tape in several places and make contact with the block.
Melting Slicks
Joined: Apr 2000
Posts: 3,198
Likes: 2
From: Northern CA
Re: water pump sending unit question. (Kizmo)
I guess you're talking about an LT1. The coolant temp sensor in the water pump has two terminals so I don't think it is grounded through the pump housing.
I used Permatex thread sealant, basically liquid teflon. HTH.
I used Permatex thread sealant, basically liquid teflon. HTH.
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
Re: water pump sending unit question. (JasonL)
The manual calls for GM part # 1052080 or equivalent to be used on the threads of the CTS. I don't know what exactly "equivalent" means, but a quick call to the parts guys might supply the answer. :crazy:
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